Two endemic viverrids of the Western Ghats, India

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Two endemic viverrids of the Western
              Ghats, India
              N. V. K. Ashraf, A. Kumar and A. J. T. Johnsingh

              The Malabar and brown palm civets, Viverra civettina and Paradoxurus
              jerdoni, are both endemic to the Western Ghats of south-west India. Little is
              known about them and in 1990 a survey was conducted in three parts of the
              Western Ghats to assess their status. This revealed that isolated populations of
              Malabar civet still survive in less disturbed areas of South Malabar but they are
              seriously threatened by habitat destruction and hunting because they are outside
              protected areas. The brown palm civet is not immediately threatened because there
              are about 25 protected areas within its distribution range. Recommendations have
              been made for conservation action to ensure the survival of these animals.

              Introduction                                                           Mountains, Madurai, Tamil Nadu. In the last
                                                                                     40 years, there have been only two possible
              Two of the seven species of civets in India, the                       sightings, one in Kudremukh in Karnataka
              Malabar civet Viverra civettina and the brown                          (Karanth, 1986) and the other in Tiruvella in
              palm civet Paradoxurus jerdoni, are endemic,                           Kerala (Kurup, 1989). Listed as 'possibly ex-
              being confined to the Western Ghats of south-                          tinct' in the IUCN Mammal Red Data Book of
              west India (Figure 1). These are the only two                          1978 (Thornback, 1978), the species was redis-
              Indian viverrids described as priority species                         covered in Elayur, a locality in the lowland
              for conservation by the Mustelid and Viverrid                          Western Ghats, in Malappuram district,
              Specialist Group (M&VSG) of the IUCN/SSC                               Kerala (Kurup, 1989).
              (Schreiber et al., 1989). Despite their rarity,                           The current distribution of the Malabar
              they have received little scientific or conser-                        civet is not clearly understood. Most pub-
              vation attention. A 3-month preliminary sur-                           lished reports suggest that it is largely a
              vey of these two species was conducted from                            species of lowland tracts of the Western Ghats
              April to June 1990. This was organized by the                          Qerdon, 1874; Pocock, 1939; Prater, 1948). It
              Wildlife Institute of India, under the initiative                      has also been reported from the elevated tracts
              of M&VSG with funding from the Zoological                              of Wynad, Coorg (Jerdon, 1874) and High
              Society for the Conservation of Species and                            Wavy Mountains of Western Ghats (Hutton,
              Populations, Germany.                                                  1949).

              Malabar civet                                                          Brown palm civet
              The Malabar civet is one of four viverrids list-                       The brown palm civet was sighted by A.
              ed as endangered in the 1990 IUCN Red List of                          Kumar in 1983 and 1990, and by Chandrasekar
              Threatened Animals (Thornback et al., 1990).                           (1989) in Indira Gandhi Wildlife Sanctuary
              The species was not recorded during surveys                            (previously Anaimalai Wildlife Sanctuary) of
              conducted by the Zoological Society of                                 Tamil Nadu, and also by E. R. C. Davidar (in
              London and by the British Museum (Natural                              Schreiber et al., 1989) in Coonoor, Tamil Nadu.
              History) in the early part of this century                             Because these sightings and most of the mu-
              (Kurup, 1989). Hutton (1949), however, re-                             seum specimens were from the elevated moist
              ported this species from the High Wavy                                 forests of the Western Ghats, it probably
                                                                                                                                                109

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N. N. K. ASHRAF, A. KUMAR AND A. J. T. JOHNSINGH
                                    76'
                                                                                     3. to assess the feasibility of long-term ecologi-
                                                                                     cal studies on these species.

                                                                                     Survey areas and methods

                                                                                     The selection of survey areas was based on re-
                                                                                     cent reports of sightings and captures of
                                                                                     Malabar and brown palm civets. The precise
                                                                                     collection locality is known for only two out of
                                                                                     about 11 museum specimens of Malabar civet.
                                                                                     Both were obtained in 1987 from Elayur,
                                                                                     Kerala (South Malabar). Elayur and adjoining
                                                                                     areas of Calicut and Palghat districts of Kerala
                                                                                     were, therefore, selected for the survey (Figure
                                                                                     1).
                                                                                         The only two recent sightings of Malabar
                                                                                     civet are from Kudremukh in Karnataka
                 •   Major cities                           Lowland Western Ghats    (Karanth, 1986) and Tiruvella in Kerala
                 •   Areas surveyed                         Elevated Western Ghats
                                                                                     (Kurup, 1989). The former (600 sq km) was se-
                 A   Areas recommended for Malabar Civet Survey
                WS Wildlife sanctuary
                                                                                     lected because it is the only protected area
                                                                                     from which this animal has been reported.
              Figure 1. Areas surveyed and areas recommended                         Moreover, it falls within the distribution range
              for further survey in parts of south-west India.                       of the northern subspecies of the brown palm
                                                                                     civet P. j . caniscus. Another area selected for
              occurs in other protected areas as well. Two                           brown palm civet was Indira Gandhi Wildlife
              subspecies of brown palm civet are recog-                              Sanctuary (987 sq km).
              nized, the southern P. ;. jerdoni and the north-                           Methods included interviews with Forest
              ern P. ]. caniscus.                                                    Department staff, tribal people, native
                 Unlike the Malabar civet, most museum                               hunters, Ayurvedic physicians, civet rearers
             specimens of brown palm civet were collected                            and trappers. Brochures with pictures of
             from moist forests above 500 m altitude. While                          Malabar civet, small Indian civet Viverricula
             the rarer P. j . caniscus is known from North                           indica, and common palm civet Paradoxurus
             and South Coorg hills, the better known P. ;'.                          hermaphroditus were distributed in the
             jerdoni is reported from the southern parts of                          Malabar civet survey areas. Other methods in-
             Western Ghats, namely Nilgiris, Anaimalais,                             cluded night transects and watch-tower obser-
             Palni and also Travancore (Pocock, 1939).                               vations using a spotlight. There are few
             Recent records of this species from Coonoor                             motorable roads, which restricted the use of
             (in Nilgiris) and Indira Gandhi Wildlife                                vehicle for transects. Attempts were made to
             Sanctuary (in Anaimalais) further suggest that                          sample all vegetation types, but where there
             it inhabits the elevated mountain Ghats. The                            had been recent sightings these were more in-
             species has not been reported in recent years                           tensively surveyed. Information was also
             from the lowland tracts of Malabar and                                  gathered on habitat preferences of the species.
             Travancore.                                                             For watch-tower observations, small wooden
                 The aims of the preliminary survey were:                            platforms were erected as vantage points for
              1. to assess the status and conservation needs                         overnight observations, near fruiting trees,
             of Malabar and brown palm civets in selected                            natural water points, deep gorges or tunnels.
             areas in their distribution range;                                      This method was used most in Indira Gandhi
             2. to gather information on their ecology and                           Wildlife Sanctuary for sighting the brown
             habitat preferences and;                                                palm civet.

              110                                                                                           ORYX VOL 27 NO 2 APRIL 1993

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VIVERRIDS OF WESTERN GHATS

                                                                300
                                                                                                                              Plantation types
                                                                                                                              V Cashew/Rubber
                                                                                                                               T Areca (Betel-Nut)
                                                                       A#              X %.                                   t Coconut
                                                                       t/              \  \
                                                                                                           k
                                                                                                                              11 Paddy               --

                                                                 150

              Figure 2. A general profile of
              plantation types in South                                I                            J \.
                                                                                                                                                      ,nui
              Malabar where isolated                                       Hill top a Upper slope            Lower slope                    Valley
              populations of Malabar civet                                                                 500                       1000                 1500
                                                                                                                    Distance (m)

              Results and discussion                                                        people interviewed were not even aware of
                                                                                            the existence of the species. The local name for
              The survey for the Malabar civet covered                                      the species, jawad, is popular among the re-
              about 105 km, mostly on foot, in 84 hours in                                  maining 10 per cent, who are mainly hunters,
              different plantation types in Elayur and the                                  trappers, Ayurvedic physicians and civet rear-
              nearby village of Poongode. The exact dis-                                    ers. None of the six hunters interviewed in
              tance covered in each vegetation type was dif-                                Kudremukh National Park recognized the
              ficult to estimate because of the complicated                                 Malabar civet.
              mosaic of plantation types. However, most                                        Out of 22 areas surveyed, seven had had
              time was spent in cashew plantations and                                      one or more captive Malabar civets sometime
              along the edges of slopes and riparian borders                                during the past 30 years for collecting 'civet-
              of valleys. At Kudremukh National Park, little                                musk'. While musk is collected from the small
              field-work could be carried out because of tor-                               Indian civet without restraining the animal,
              rential rain.                                                                 musk is obtained from the Malabar civet by
                 For the brown palm civet, about 170 km was                                 special manipulation. The civet-musk of the
              covered in tropical evergreen forest, moist de-                               Malabar civet is said to have been in
              ciduous forest and plantations in 34 night-                                   widespread use 20-25 years ago.
              hours of vehicle transect in Indira Gandhi
              Wildlife Sanctuary. Foot transects covered a                                  Ecology. Natural forests have completely dis-
              distance of 35 km in evergreen forests in about                               appeared in the entire stretch of the coastal
              11 hours. Watch-tower observations lasted 64                                  Western Ghats due to early colonization by
              hours during 9 nights. Almost all the obser-                                  man. The present vegetation is, therefore, of
              vation points were near fruiting trees.                                       secondary origin (Champion and Seth, 1968),
                                                                                            and consists mostly of plantations. These plan-
                                                                                            tations follow a pattern according to the ter-
              Malabar civet                                                                 rain and presence of riparian areas. Cashew,
              Although no Malabar civets were seen, evi-                                    rubber and sometimes coconut plantations are
              dence of their existence was found in parts of                                found on the drier hill tops and upper slopes,
              South Malabar: skins of two animals captured                                  while the lower moist slopes are planted with
              in 1987 and 1990 were found in Poongode and                                   betel-nut palms. The valleys are dominated by
              a defecation site (civetry) was discovered in                                 paddy fields and sometimes coconut (Figure
              Elayur.                                                                       2). Of these, the cashew plantations are the
                Scarcely anybody in the survey areas recog-                                 least disturbed. They are not weeded and so
              nized the Malabar civet as a critically en-                                   have a dense understorey of shrubs and
              dangered species. About 90 per cent of over                                   grasses. For a terrestrial species such as the

              ORYX VOL 27 NO 2 APRIL 1993                                                                                                                 111

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N. N. K. ASHRAF, A. KUMAR AND A. J. T. JOHNSINGH

              Table 1. Localities in Malappuram district of Kerala where Malabar civets could be captured for a captive-
              breeding programme

              No.    Place                        Post office                   Nearest town           Reason for selection

               1     Poongode                     Vellayur                      Wandoor                Two animals captured March 1990

               2     Chembrakkattur               Kadungallur                   Areacode               Individuals have been trapped often,
                                                                                                       most recent in 1989

               3     Chattangotupuram             Chattangotupuram               Wandoor               Trapped in 1988, recent sightings

               4      Elayur                      Iruvetty                      Areacode               Three animals captured, 1987

                                                                                                       Captured in 1976 and 1984 and recent
                                                                                                       sightings in Uragam, Arimbara hills

                     Arimbara                     Arimbara                      Kondotty               Captured in 1976 and 1984 and recent
                                                                                                       sightings in Uragam, Arimbara hills

               7      Calicut University campus                                                        N. G. George pers. comm.

              Malabar civet, these thickets provide import-                          species under the Indian Wildlife Protection
              ant cover. It is probable that the cashew plan-                        Act 1972, is not selectively hunted but is cap-
              tations are a 'refuge' rather than a preferred                         tured and killed when encountered. Out of 22
              habitat. Most captures of this species in the                          Malabar civets reported captured on 18 occa-
              last 30 years, however, have been in the val-                          sions in the last 40 years, 10 were caught by
              leys, around riparian areas. This suggests their                       dogs. Dogs are reported to become excited by
              possible dependence on shallow water courses                           the Malabar civet's scent and easily provoked
              where they forage at night (Figure 2).                                 by the civet's fierce response to interference.
                 The Malabar civet has never been observed
              in trees and possibly forages almost entirely
                                                                                     Brown palm civet
              on the ground. Like the African civet and
              other large civets (Wemmer, 1984), they are                            No evidence of brown palm civet could be
              also known to have specific defecation sites.                          found during the survey at Anaimalais.
              Considered aggressive among conspecifics,                              Reports that it is hunted outside Kudremukh
              they have been observed usually alone.                                 National Park suggest that it is present in this
              Evidence suggests that the young are raised in                         protected area. Local people had little knowl-
              secluded thickets.                                                     edge about the brown palm civet, perhaps be-
                                                                                     cause it is nocturnal and probably largely
              Threats. Increasing human disturbance, habitat                         arboreal, and might have gone unnoticed by
              destruction and fragmentation, poaching and                            the local villagers who rarely venture into the
              trapping are the major threats facing this                             forests at night.
              species. Cashew plantations, which probably
              hold most of the surviving populations of                              Ecology. Little is known about the ecology of
              Malabar civet, are now threatened by large-                            brown palm civet. The three recent sightings
              scale clearance for planting rubber. Moreover,                         of this species in Anaimalais were in ever-
              the closed canopy of a mature rubber plan-                             green forests. Coonoor, where Davidar
              tation prevents the growth of shrubs and                               trapped a specimen in 1976 (Schreiber et ah,
              grasses, which are essential cover for this                            1989) also had some patches of evergreen for-
              species. The Malabar civet, a Schedule I                               est in the past. The adjoining Mudumalai
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VIVERRIDS OF WESTERN GHATS

              Wildlife Sanctuary has no evergreen forests                            Western Ghats where there are about 25 pro-
              and is unlikely to contain the species. Further                        tected areas in its distribution range. This
              surveys and studies are essential to determine                         species is not immediately threatened, but
              whether or not this species is dependent on                            various development activities might threaten
              evergreen forests.                                                     its survival in future.
                 The brown palm civet is most likely to occur
              in low densities, especially compared with the
              common palm civet. Both these arboreal                                 Recommendations
              species have been reported from evergreen
              forests in the same localities (for example                            The following recommendations are made for
              Kudremukh). But unlike the brown palm                                  conservation action to ensure the survival of
              civet, the common palm civet is frequently                             these viverrids.
              sighted even beyond the limits of coffee and
              tea plantations. Adaptability to habitat distur-
                                                                                     Captive breeding
              bance is probably the major difference be-
              tween these two species. Hutton (1949),                                Reports of frequent captures of Malabar civet
              suggested that they mated around May, bas-                             in recent years in many localities show that
              ing this on the fact that they were heard to call                      these isolated populations are under tremen-
              at this time.                                                          dous pressure. The designation of protected
                                                                                     areas is not feasible in these densely popu-
              Threats. This species may be more elusive than                         lated areas and we cannot assume that the
              the Malabar civet because of its arboreal habits                       species would be represented in any protected
              and its occurrence in moist forests. Many of                           area of the Western Ghat mountains, where it
              the protected areas in the Western Ghats are                           has not been definitely recorded. It is, there-
              threatened by development programmes.                                  fore, strongly recommended that a few indi-
              Mining activities in Kudremukh, hydroelectric                          viduals be captured for a captive-breeding
              projects in Anaimalais and large-scale plan-                           programme. This could be done in areas
              tations of coffee, cardamom and tea in and                             where the species is under severe hunting
              around these protected areas have vastly de-                           pressure and where it is impossible to imple-
              pleted the forest cover. Hunting is unlikely to                        ment long-term conservation measures (Table
              be a major threat to the survival of brown                             1). Reintroduction could be possible if suitable
              palm civet. However, illegal hunting is still                          undisturbed areas were identified.
              common in privately owned coffee, car-
              damom and tea estates.
                                                                                     Field surveys
                                                                                     Intensive surveys in some key areas of both
              Conclusions                                                            the elevated and coastal provinces of Western
                                                                                     Ghats are recommended.
              Isolated populations of Malabar civet still sur-                          The suggested Kurathimalai and Ponmudi
              vive in less disturbed thickets on small hills                         Sanctuaries in Kerala, and Honavar riverine
              and gentle slopes in South Malabar, Kerala.                            fragments and Pilarkan forest in Karnataka
              However, even these surviving populations                              have some undisturbed lowland forests
              are seriously threatened. It has vanished re-                          (Rodgers and Panwar, 1988). The Palghat Gap
              cently from most of its past range due to habi-                        in Kerala and the existing Someswara and
              tat destruction and hunting. The lowland                               Mookambika wildlife sanctuaries in Karnataka
              Western Ghats have no protected areas or any                           also have some lowland forests. Intensive sur-
              extensive areas of undisturbed natural veg-                            veys for the Malabar civet in these seven areas
              etation that could be protected for the conser-                        (Figure 1) are also recommended.
              vation of this species. The brown palm civet                              Surveys in one or two protected areas in
              has been reported from elevated tracts of                              each of the six conservation units of the high-
              ORYX VOL 27 NO 2 APRIL 1993                                                                                                        113

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N. N. K. ASHRAF, A. KUMAR AND A.J. T. JOHNSINGH

             altitude tracts of Western Ghats (Coorg,                               References
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             Acknowledgmen ts
                                                                                      Switzerland, and Cambridge, UK.
             This survey was the outcome of interest shown by                       Wemmer, C. 1984. Civets and Genets. In The
             Roland Wirth, chairman of the M&VSG, and fund-                           Encyclopedia of Mammals: 1 (ed. David Macdonald),
             ing by the Zoological Society for the Conservation of                    pp. 136-145, George Allen and Unwin, London.
             Species and Populations, Germany. We are thankful
             to the Chief Wildlife Wardens of Kerala, Tamil                         N. V. K. Ashraf, A. Kumar, and A. J. T. Johnsingh,
             Nadu and Karnataka for permission to conduct the                       Wildlife Institute of India, Dehra Dun, India 248 006.
             survey. We are grateful to the director, Wildlife
             Institute of India, for facilitating the study. Dr G. U.
             Kurup of Zoological Survey of India, Calicut and Mr
             N. G. George of Calicut University provided valu-
             able information on the elusive Malabar civet.

              114                                                                                           ORYX VOL 27 NO 2 APRIL 1993

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